possible deadlock in static_key_slow_dec
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syzbot
Sep 1, 2019, 1:27:08 AM9/1/19
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 97ab07e1 Linux 4.19.69
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=116eb7b6600000
kernel config: https://syzkaller.appspot.com/x/.config?x=a73820df154c3af
dashboard link: https://syzkaller.appspot.com/bug?extid=c1fa0fb3ac382f34194e
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+c1fa0f...@syzkaller.appspotmail.com
R13: 00000000004c783b R14: 00000000004dd0f0 R15: 00000000ffffffff
Task in /syz5 killed as a result of limit of /syz5
memory: usage 307168kB, limit 307200kB, failcnt 3345
======================================================
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
WARNING: possible circular locking dependency detected
4.19.69 #43 Not tainted
------------------------------------------------------
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
syz-executor.4/6974 is trying to acquire lock:
00000000fff4f724 (cpu_hotplug_lock.rw_sem){++++}
Memory cgroup stats for
, at: __static_key_slow_dec kernel/jump_label.c:212 [inline]
, at: static_key_slow_dec+0x54/0xa0 kernel/jump_label.c:227
but task is already holding lock:
0000000084b525b7 (
/syz5
&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x173/0x230 mm/util.c:355
:
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3
cache:112KB
(&mm->mmap_sem){++++}:
__might_fault mm/memory.c:4638 [inline]
__might_fault+0x15e/0x1e0 mm/memory.c:4623
_copy_from_user+0x30/0x150 lib/usercopy.c:10
copy_from_user include/linux/uaccess.h:147 [inline]
perf_event_query_prog_array+0x106/0x320 kernel/trace/bpf_trace.c:1113
_perf_ioctl+0x403/0x12b0 kernel/events/core.c:5112
perf_ioctl+0x5c/0x90 kernel/events/core.c:5143
rss:242332KB
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688
ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
rss_huge:210944KB
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #2 (&cpuctx_mutex){+.+.}:
__mutex_lock_common kernel/locking/mutex.c:925 [inline]
__mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
shmem:0KB
perf_event_init_cpu+0xcf/0x180 kernel/events/core.c:11745
perf_event_init+0x317/0x363 kernel/events/core.c:11792
start_kernel+0x505/0x8c5 init/main.c:646
mapped_file:0KB
x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:472
x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:453
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
-> #1 (pmus_lock){+.+.}:
__mutex_lock_common kernel/locking/mutex.c:925 [inline]
__mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
perf_event_init_cpu+0x2f/0x180 kernel/events/core.c:11739
dirty:0KB
cpuhp_invoke_callback+0x201/0x1af0 kernel/cpu.c:168
cpuhp_up_callbacks kernel/cpu.c:567 [inline]
_cpu_up+0x270/0x540 kernel/cpu.c:1118
do_cpu_up+0x16b/0x190 kernel/cpu.c:1153
cpu_up+0x1b/0x20 kernel/cpu.c:1161
smp_init+0x1a8/0x1c1 kernel/smp.c:578
kernel_init_freeable+0x339/0x5c8 init/main.c:1138
kernel_init+0x12/0x1c5 init/main.c:1062
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
-> #0 (cpu_hotplug_lock.rw_sem){++++}:
lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36
[inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
cpus_read_lock+0x3e/0xe0 kernel/cpu.c:288
__static_key_slow_dec kernel/jump_label.c:212 [inline]
static_key_slow_dec+0x54/0xa0 kernel/jump_label.c:227
sw_perf_event_destroy+0x8b/0x130 kernel/events/core.c:8238
_free_event+0x354/0x1220 kernel/events/core.c:4453
put_event+0x47/0x60 kernel/events/core.c:4547
perf_mmap_close+0x789/0xe40 kernel/events/core.c:5547
remove_vma+0xb2/0x180 mm/mmap.c:182
remove_vma_list mm/mmap.c:2554 [inline]
do_munmap+0x723/0xed0 mm/mmap.c:2790
mmap_region+0x224/0x1760 mm/mmap.c:1706
do_mmap+0x8e2/0x1080 mm/mmap.c:1536
do_mmap_pgoff include/linux/mm.h:2319 [inline]
vm_mmap_pgoff+0x1c5/0x230 mm/util.c:357
ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline]
__x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
other info that might help us debug this:
Chain exists of:
cpu_hotplug_lock.rw_sem --> &cpuctx_mutex --> &mm->mmap_sem
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&mm->mmap_sem);
lock(&cpuctx_mutex);
lock(&mm->mmap_sem);
lock(cpu_hotplug_lock.rw_sem);
*** DEADLOCK ***
1 lock held by syz-executor.4/6974:
#0: 0000000084b525b7 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x173/0x230
mm/util.c:355
stack backtrace:
CPU: 1 PID: 6974 Comm: syz-executor.4 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221
check_prev_add kernel/locking/lockdep.c:1861 [inline]
check_prevs_add kernel/locking/lockdep.c:1974 [inline]
validate_chain kernel/locking/lockdep.c:2415 [inline]
__lock_acquire+0x2e19/0x49c0 kernel/locking/lockdep.c:3411
lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
cpus_read_lock+0x3e/0xe0 kernel/cpu.c:288
__static_key_slow_dec kernel/jump_label.c:212 [inline]
static_key_slow_dec+0x54/0xa0 kernel/jump_label.c:227
sw_perf_event_destroy+0x8b/0x130 kernel/events/core.c:8238
_free_event+0x354/0x1220 kernel/events/core.c:4453
put_event+0x47/0x60 kernel/events/core.c:4547
perf_mmap_close+0x789/0xe40 kernel/events/core.c:5547
remove_vma+0xb2/0x180 mm/mmap.c:182
remove_vma_list mm/mmap.c:2554 [inline]
do_munmap+0x723/0xed0 mm/mmap.c:2790
mmap_region+0x224/0x1760 mm/mmap.c:1706
do_mmap+0x8e2/0x1080 mm/mmap.c:1536
do_mmap_pgoff include/linux/mm.h:2319 [inline]
vm_mmap_pgoff+0x1c5/0x230 mm/util.c:357
ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline]
__x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7
48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f138ecf6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000
RBP: 000000000075c070 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 00007f138ecf76d4
R13: 00000000004c5d7b R14: 00000000004da810 R15: 00000000ffffffff
writeback:0KB swap:0KB inactive_anon:0KB active_anon:242288KB
inactive_file:0KB active_file:4KB unevictable:0KB
Memory cgroup out of memory: Kill process 23560 (syz-executor.5) score 1110
or sacrifice child
Killed process 23560 (syz-executor.5) total-vm:72580kB, anon-rss:2196kB,
file-rss:34816kB, shmem-rss:0kB
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|
__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
syz-executor.3 cpuset=syz3 mems_allowed=0-1
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
CPU: 1 PID: 6987 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634
memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667
__alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193
alloc_pages include/linux/gfp.h:509 [inline]
pmd_alloc_one arch/x86/include/asm/pgalloc.h:102 [inline]
__pmd_alloc+0x41/0x460 mm/memory.c:4283
pmd_alloc+0x10c/0x180 include/linux/mm.h:1840
copy_pmd_range mm/memory.c:1133 [inline]
copy_pud_range mm/memory.c:1187 [inline]
copy_p4d_range mm/memory.c:1209 [inline]
copy_page_range+0x633/0x1f90 mm/memory.c:1271
dup_mmap kernel/fork.c:544 [inline]
dup_mm kernel/fork.c:1283 [inline]
copy_mm kernel/fork.c:1339 [inline]
copy_process.part.0+0x543d/0x7a30 kernel/fork.c:1892
copy_process kernel/fork.c:1689 [inline]
_do_fork+0x257/0xfd0 kernel/fork.c:2202
__do_sys_clone kernel/fork.c:2309 [inline]
__se_sys_clone kernel/fork.c:2303 [inline]
__x64_sys_clone+0xbf/0x150 kernel/fork.c:2303
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7
48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe4ffe60c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459879
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe4ffe616d4
R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 7004 Comm: syz-executor.5 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
fail_dump lib/fault-inject.c:51 [inline]
should_fail.cold+0xa/0x1b lib/fault-inject.c:149
__should_failslab+0x121/0x190 mm/failslab.c:32
should_failslab+0x9/0x14 mm/slab_common.c:1557
slab_pre_alloc_hook mm/slab.h:424 [inline]
slab_alloc mm/slab.c:3383 [inline]
__do_kmalloc mm/slab.c:3725 [inline]
__kmalloc+0x2e2/0x750 mm/slab.c:3736
kmalloc include/linux/slab.h:520 [inline]
sock_kmalloc net/core/sock.c:1981 [inline]
sock_kmalloc+0xc6/0x120 net/core/sock.c:1972
___sys_sendmsg+0x5bd/0x920 net/socket.c:2082
__sys_sendmsg+0x105/0x1d0 net/socket.c:2153
__do_sys_sendmsg net/socket.c:2162 [inline]
__se_sys_sendmsg net/socket.c:2160 [inline]
__x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7
48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe248f09c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe248f09c90 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe248f0a6d4
R13: 00000000004c77e9 R14: 00000000004dd048 R15: 0000000000000004
Task in /syz3 killed as a result of limit of /syz3
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
memory: usage 307200kB, limit 307200kB, failcnt 1059
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz3: cache:36KB rss:249924KB rss_huge:223232KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:249892KB inactive_file:0KB active_file:4KB
unevictable:0KB
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 0000000046869e6f conn xmit_atomic (null)
Memory cgroup out of memory: Kill process 5572 (syz-executor.3) score 1113
or sacrifice child
Killed process 5572 (syz-executor.3) total-vm:72712kB, anon-rss:2204kB,
file-rss:35792kB, shmem-rss:0kB
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|
__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 0 PID: 7045 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634
memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667
__alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413
alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193
alloc_pages include/linux/gfp.h:509 [inline]
pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35
__pte_alloc+0x2a/0x360 mm/memory.c:653
copy_pte_range mm/memory.c:1077 [inline]
copy_pmd_range mm/memory.c:1153 [inline]
copy_pud_range mm/memory.c:1187 [inline]
copy_p4d_range mm/memory.c:1209 [inline]
copy_page_range+0x151f/0x1f90 mm/memory.c:1271
dup_mmap kernel/fork.c:544 [inline]
dup_mm kernel/fork.c:1283 [inline]
copy_mm kernel/fork.c:1339 [inline]
copy_process.part.0+0x543d/0x7a30 kernel/fork.c:1892
copy_process kernel/fork.c:1689 [inline]
_do_fork+0x257/0xfd0 kernel/fork.c:2202
__do_sys_clone kernel/fork.c:2309 [inline]
__se_sys_clone kernel/fork.c:2303 [inline]
__x64_sys_clone+0xbf/0x150 kernel/fork.c:2303
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7
48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe4ffe60c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459879
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe4ffe616d4
R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff
Task in /syz3 killed as a result of limit of /syz3
memory: usage 307200kB, limit 307200kB, failcnt 1107
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
Memory cgroup stats for /syz3: cache:36KB rss:249884KB rss_huge:223232KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:249884KB inactive_file:0KB active_file:0KB
unevictable:0KB
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
Memory cgroup out of memory: Kill process 12632 (syz-executor.3) score 1113
or sacrifice child
Killed process 12632 (syz-executor.3) total-vm:72844kB, anon-rss:2208kB,
file-rss:35784kB, shmem-rss:0kB
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL),
nodemask=(null), order=0, oom_score_adj=1000
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
syz-executor.3 cpuset=syz3 mems_allowed=0-1
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
CPU: 0 PID: 7106 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972
mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987
wp_page_copy+0x430/0x16a0 mm/memory.c:2520
do_wp_page+0x57d/0x10b0 mm/memory.c:2799
handle_pte_fault mm/memory.c:4057 [inline]
__handle_mm_fault+0x2305/0x3f80 mm/memory.c:4165
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x40ea18
Code: 8b 34 c6 4a 8d 04 2e 48 3d ff ff ff 7e 0f 86 77 ff ff ff bf 95 ee 4b
00 31 c0 e8 13 33 ff ff 31 ff e8 5c 2f ff ff 0f 1f 40 00 <89> 3c b5 00 00
73 00 eb b6 31 ed 0f 1f 44 00 00 80 3d 4e 1a 66 00
RSP: 002b:00007ffd2e0545c0 EFLAGS: 00010246
RAX: 00000000f20d9cc9 RBX: 00000000379c6179 RCX: 0000001b31b20000
RDX: 0000000000000000 RSI: 0000000000001cc9 RDI: fffffffff20d9cc9
RBP: 0000000000000015 R08: 00000000f20d9cc9 R09: 00000000f20d9ccd
R10: 00007ffd2e054760 R11: 0000000000000246 R12: 000000000075bfa8
R13: 0000000080000000 R14: 00007fe501e62008 R15: 0000000000000028
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
Task in /syz3 killed as a result of limit of /syz3
memory: usage 307168kB, limit 307200kB, failcnt 1157
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz3: cache:36KB rss:249836KB rss_huge:223232KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:249896KB inactive_file:0KB active_file:0KB
unevictable:0KB
Memory cgroup out of memory: Kill process 31414 (syz-executor.3) score 1113
or sacrifice child
Killed process 31414 (syz-executor.3) total-vm:72580kB, anon-rss:2192kB,
file-rss:35800kB, shmem-rss:0kB
oom_reaper: reaped process 31414 (syz-executor.3), now anon-rss:0kB,
file-rss:34840kB, shmem-rss:0kB
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL),
nodemask=(null), order=0, oom_score_adj=1000
atomic_op 0000000082dbd6e8 conn xmit_atomic (null)
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 0 PID: 7162 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972
mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987
wp_page_copy+0x430/0x16a0 mm/memory.c:2520
do_wp_page+0x57d/0x10b0 mm/memory.c:2799
handle_pte_fault mm/memory.c:4057 [inline]
__handle_mm_fault+0x2305/0x3f80 mm/memory.c:4165
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x40c228
Code: 00 00 49 8d be 88 00 00 00 48 89 ea 48 89 de 0f 85 dd 00 00 00 e8 38
2c 00 00 8b 05 e2 bd 32 00 48 8b 15 73 42 66 00 83 c0 01 <89> 05 d2 bd 32
00 89 02 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f
RSP: 002b:00007ffd2e054620 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 0000001b30b20e00 RCX: 0000001b31b20000
RDX: 0000001b30b20000 RSI: 0000000000001e2f RDI: ffffffff13f8fe2f
RBP: 0000001b30b20e04 R08: 0000000013f8fe2f R09: 0000000013f8fe33
R10: 00007ffd2e054760 R11: 0000000000000246 R12: 0000001b30b20e08
R13: 00000000000e3bb6 R14: 000000000075bfc8 R15: 000000000075bfd4
Task in /syz3 killed as a result of limit of /syz3
memory: usage 307200kB, limit 307200kB, failcnt 1207
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz3: cache:36KB rss:249876KB rss_huge:223232KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:249940KB inactive_file:0KB active_file:0KB
unevictable:0KB
Memory cgroup out of memory: Kill process 15346 (syz-executor.3) score 1113
or sacrifice child
Killed process 15346 (syz-executor.3) total-vm:72712kB, anon-rss:2200kB,
file-rss:35788kB, shmem-rss:0kB
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|
__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 1 PID: 7187 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xc4e/0x1480 mm/memcontrol.c:2304
memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634
memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667
__alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413
alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193
alloc_pages include/linux/gfp.h:509 [inline]
pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35
do_fault_around mm/memory.c:3635 [inline]
do_read_fault mm/memory.c:3676 [inline]
do_fault mm/memory.c:3810 [inline]
handle_pte_fault mm/memory.c:4041 [inline]
__handle_mm_fault+0x3528/0x3f80 mm/memory.c:4165
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x459879
Code: Bad RIP value.
RSP: 002b:00007fe4ffe60c78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000459879
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe4ffe616d4
R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff
Task in /syz3 killed as a result of limit of /syz3
memory: usage 304728kB, limit 307200kB, failcnt 1207
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz3: cache:36KB rss:247792KB rss_huge:221184KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:247696KB inactive_file:0KB active_file:8KB
unevictable:0KB
Memory cgroup out of memory: Kill process 16634 (syz-executor.3) score 1113
or sacrifice child
Killed process 16634 (syz-executor.3) total-vm:72712kB, anon-rss:2200kB,
file-rss:35788kB, shmem-rss:0kB
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
atomic_op 000000009612f109 conn xmit_atomic (null)
kobject: 'loop1' (00000000946a99c0): kobject_uevent_env
kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
__ntfs_warning: 57 callbacks suppressed
ntfs: (device loop1): parse_options(): Option utf8 is no longer supported,
using option nls=utf8. Please use option nls=utf8 in the future and make
sure utf8 is compiled either as a module or into the kernel.
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
ntfs: (device loop1): parse_options(): Unrecognized mount option
appraise_type.
ntfs: (device loop1): parse_options(): Unrecognized mount option
euid>00000000000000000000.
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
atomic_op 00000000e097167a conn xmit_atomic (null)
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (00000000946a99c0): kobject_uevent_env
kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (00000000946a99c0): kobject_uevent_env
kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
atomic_op 000000001e8fc05f conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (00000000946a99c0): kobject_uevent_env
kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
atomic_op 00000000930c5968 conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
atomic_op 00000000ac833d89 conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
atomic_op 000000009319c13a conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
Unknown ioctl 35302
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
atomic_op 00000000846767aa conn xmit_atomic (null)
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
atomic_op 000000008ef349f2 conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL),
nodemask=(null), order=0, oom_score_adj=1000
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 1 PID: 7381 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972
mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987
do_huge_pmd_wp_page_fallback mm/huge_memory.c:1186 [inline]
do_huge_pmd_wp_page+0x97e/0x34a0 mm/huge_memory.c:1346
wp_huge_pmd mm/memory.c:3942 [inline]
__handle_mm_fault+0x167b/0x3f80 mm/memory.c:4155
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x440af9
Code: b7 0e 66 89 0f 48 83 c6 02 48 83 c7 02 0f 1f 40 00 f6 c2 04 74 0c 8b
0e 89 0f 48 83 c6 04 48 83 c7 04 f6 c2 08 74 0e 48 8b 0e <48> 89 0f 48 83
c6 08 48 83 c7 08 81 e2 f0 00 00 00 74 1f 0f 1f 40
RSP: 002b:00007ffd2e054688 EFLAGS: 00010202
RAX: 0000000020000140 RBX: 0000000000000000 RCX: 0030656c69662f2e
RDX: 0000000000000008 RSI: 0000000000760ad0 RDI: 0000000020000140
RBP: 0000000000760ab0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000004395d0 R11: 0000000000000012 R12: 00000000004c5e06
R13: 000000000000012c R14: 0000000000760ab8 R15: fffffffffffffffe
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
Task in /syz3 killed as a result of limit of /syz3
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
memory: usage 307200kB, limit 307200kB, failcnt 1239
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
Memory cgroup stats for /syz3: cache:36KB rss:248044KB rss_huge:221184KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:248148KB inactive_file:4KB active_file:4KB
unevictable:0KB
Memory cgroup out of memory: Kill process 19134 (syz-executor.3) score 1113
or sacrifice child
Killed process 19134 (syz-executor.3) total-vm:72580kB, anon-rss:2192kB,
file-rss:35796kB, shmem-rss:0kB
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.5 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|
__GFP_ZERO), nodemask=(null), order=3, oom_score_adj=1000
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
syz-executor.5 cpuset=syz5 mems_allowed=0-1
CPU: 0 PID: 7395 Comm: syz-executor.5 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634
memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667
__alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413
__alloc_pages include/linux/gfp.h:473 [inline]
__alloc_pages_node include/linux/gfp.h:486 [inline]
alloc_pages_node include/linux/gfp.h:500 [inline]
alloc_thread_stack_node kernel/fork.c:241 [inline]
dup_task_struct kernel/fork.c:806 [inline]
copy_process.part.0+0x3e0/0x7a30 kernel/fork.c:1732
copy_process kernel/fork.c:1689 [inline]
_do_fork+0x257/0xfd0 kernel/fork.c:2202
__do_sys_clone kernel/fork.c:2309 [inline]
__se_sys_clone kernel/fork.c:2303 [inline]
__x64_sys_clone+0xbf/0x150 kernel/fork.c:2303
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c249
Code: ff 48 85 f6 0f 84 27 8e fb ff 48 83 ee 10 48 89 4e 08 48 89 3e 48 89
d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 0f 8c
fe 8d fb ff 74 01 c3 31 ed 48 f7 c7 00 00 01 00 75
RSP: 002b:00007fffbb9bee18 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fe248f0a700 RCX: 000000000045c249
RDX: 00007fe248f0a9d0 RSI: 00007fe248f09db0 RDI: 00000000003d0f00
RBP: 00007fffbb9bf030 R08: 00007fe248f0a700 R09: 00007fe248f0a700
R10: 00007fe248f0a9d0 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fffbb9beecf R14: 00007fe248f0a9c0 R15: 000000000075bf2c
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
Task in /syz5 killed as a result of limit of /syz5
memory: usage 307200kB, limit 307200kB, failcnt 3375
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz5: cache:112KB rss:242852KB rss_huge:210944KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:242964KB inactive_file:0KB active_file:0KB
unevictable:0KB
Memory cgroup out of memory: Kill process 7301 (syz-executor.5) score 1113
or sacrifice child
Killed process 7301 (syz-executor.5) total-vm:72712kB, anon-rss:2204kB,
file-rss:35788kB, shmem-rss:0kB
syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL),
nodemask=(null), order=0, oom_score_adj=1000
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 0 PID: 7439 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
rds_sendmsg: 3 callbacks suppressed
atomic_op 0000000009777ed4 conn xmit_atomic (null)
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
kobject: 'loop4' (000000009228f136): kobject_uevent_env
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972
mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987
do_huge_pmd_wp_page_fallback mm/huge_memory.c:1186 [inline]
do_huge_pmd_wp_page+0x97e/0x34a0 mm/huge_memory.c:1346
wp_huge_pmd mm/memory.c:3942 [inline]
__handle_mm_fault+0x167b/0x3f80 mm/memory.c:4155
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x440af9
Code: b7 0e 66 89 0f 48 83 c6 02 48 83 c7 02 0f 1f 40 00 f6 c2 04 74 0c 8b
0e 89 0f 48 83 c6 04 48 83 c7 04 f6 c2 08 74 0e 48 8b 0e <48> 89 0f 48 83
c6 08 48 83 c7 08 81 e2 f0 00 00 00 74 1f 0f 1f 40
RSP: 002b:00007ffd2e054688 EFLAGS: 00010202
RAX: 0000000020000140 RBX: 0000000000000000 RCX: 0030656c69662f2e
RDX: 0000000000000008 RSI: 0000000000760ad0 RDI: 0000000020000140
RBP: 0000000000760ab0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000004395d0 R11: 0000000000000012 R12: 00000000004c5e06
R13: 000000000000012c R14: 0000000000760ab8 R15: fffffffffffffffe
Task in /syz3 killed as a result of limit of /syz3
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
memory: usage 307200kB, limit 307200kB, failcnt 1282
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
atomic_op 00000000719819b1 conn xmit_atomic (null)
Memory cgroup stats for /syz3: cache:36KB rss:248000KB rss_huge:221184KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:248140KB inactive_file:0KB active_file:4KB
unevictable:0KB
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
Memory cgroup out of memory: Kill process 19967 (syz-executor.3) score 1113
or sacrifice child
Killed process 19967 (syz-executor.3) total-vm:72580kB, anon-rss:2192kB,
file-rss:35796kB, shmem-rss:0kB
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 00000000e1f67faa conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 0000000030601010 conn xmit_atomic (null)
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
atomic_op 000000001b382428 conn xmit_atomic (null)
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
atomic_op 0000000095026511 conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 00000000f055bf0e conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
atomic_op 000000000ede4210 conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
atomic_op 00000000157b08cc conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 00000000b9c604e7 conn xmit_atomic (null)
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 97ab07e1 Linux 4.19.69
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=116eb7b6600000
kernel config: https://syzkaller.appspot.com/x/.config?x=a73820df154c3af
dashboard link: https://syzkaller.appspot.com/bug?extid=c1fa0fb3ac382f34194e
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+c1fa0f...@syzkaller.appspotmail.com
R13: 00000000004c783b R14: 00000000004dd0f0 R15: 00000000ffffffff
Task in /syz5 killed as a result of limit of /syz5
memory: usage 307168kB, limit 307200kB, failcnt 3345
======================================================
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
WARNING: possible circular locking dependency detected
4.19.69 #43 Not tainted
------------------------------------------------------
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
syz-executor.4/6974 is trying to acquire lock:
00000000fff4f724 (cpu_hotplug_lock.rw_sem){++++}
Memory cgroup stats for
, at: __static_key_slow_dec kernel/jump_label.c:212 [inline]
, at: static_key_slow_dec+0x54/0xa0 kernel/jump_label.c:227
but task is already holding lock:
0000000084b525b7 (
/syz5
&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x173/0x230 mm/util.c:355
:
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3
cache:112KB
(&mm->mmap_sem){++++}:
__might_fault mm/memory.c:4638 [inline]
__might_fault+0x15e/0x1e0 mm/memory.c:4623
_copy_from_user+0x30/0x150 lib/usercopy.c:10
copy_from_user include/linux/uaccess.h:147 [inline]
perf_event_query_prog_array+0x106/0x320 kernel/trace/bpf_trace.c:1113
_perf_ioctl+0x403/0x12b0 kernel/events/core.c:5112
perf_ioctl+0x5c/0x90 kernel/events/core.c:5143
rss:242332KB
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688
ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
rss_huge:210944KB
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #2 (&cpuctx_mutex){+.+.}:
__mutex_lock_common kernel/locking/mutex.c:925 [inline]
__mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
shmem:0KB
perf_event_init_cpu+0xcf/0x180 kernel/events/core.c:11745
perf_event_init+0x317/0x363 kernel/events/core.c:11792
start_kernel+0x505/0x8c5 init/main.c:646
mapped_file:0KB
x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:472
x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:453
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
-> #1 (pmus_lock){+.+.}:
__mutex_lock_common kernel/locking/mutex.c:925 [inline]
__mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
perf_event_init_cpu+0x2f/0x180 kernel/events/core.c:11739
dirty:0KB
cpuhp_invoke_callback+0x201/0x1af0 kernel/cpu.c:168
cpuhp_up_callbacks kernel/cpu.c:567 [inline]
_cpu_up+0x270/0x540 kernel/cpu.c:1118
do_cpu_up+0x16b/0x190 kernel/cpu.c:1153
cpu_up+0x1b/0x20 kernel/cpu.c:1161
smp_init+0x1a8/0x1c1 kernel/smp.c:578
kernel_init_freeable+0x339/0x5c8 init/main.c:1138
kernel_init+0x12/0x1c5 init/main.c:1062
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
-> #0 (cpu_hotplug_lock.rw_sem){++++}:
lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36
[inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
cpus_read_lock+0x3e/0xe0 kernel/cpu.c:288
__static_key_slow_dec kernel/jump_label.c:212 [inline]
static_key_slow_dec+0x54/0xa0 kernel/jump_label.c:227
sw_perf_event_destroy+0x8b/0x130 kernel/events/core.c:8238
_free_event+0x354/0x1220 kernel/events/core.c:4453
put_event+0x47/0x60 kernel/events/core.c:4547
perf_mmap_close+0x789/0xe40 kernel/events/core.c:5547
remove_vma+0xb2/0x180 mm/mmap.c:182
remove_vma_list mm/mmap.c:2554 [inline]
do_munmap+0x723/0xed0 mm/mmap.c:2790
mmap_region+0x224/0x1760 mm/mmap.c:1706
do_mmap+0x8e2/0x1080 mm/mmap.c:1536
do_mmap_pgoff include/linux/mm.h:2319 [inline]
vm_mmap_pgoff+0x1c5/0x230 mm/util.c:357
ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline]
__x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
other info that might help us debug this:
Chain exists of:
cpu_hotplug_lock.rw_sem --> &cpuctx_mutex --> &mm->mmap_sem
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&mm->mmap_sem);
lock(&cpuctx_mutex);
lock(&mm->mmap_sem);
lock(cpu_hotplug_lock.rw_sem);
*** DEADLOCK ***
1 lock held by syz-executor.4/6974:
#0: 0000000084b525b7 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x173/0x230
mm/util.c:355
stack backtrace:
CPU: 1 PID: 6974 Comm: syz-executor.4 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221
check_prev_add kernel/locking/lockdep.c:1861 [inline]
check_prevs_add kernel/locking/lockdep.c:1974 [inline]
validate_chain kernel/locking/lockdep.c:2415 [inline]
__lock_acquire+0x2e19/0x49c0 kernel/locking/lockdep.c:3411
lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
cpus_read_lock+0x3e/0xe0 kernel/cpu.c:288
__static_key_slow_dec kernel/jump_label.c:212 [inline]
static_key_slow_dec+0x54/0xa0 kernel/jump_label.c:227
sw_perf_event_destroy+0x8b/0x130 kernel/events/core.c:8238
_free_event+0x354/0x1220 kernel/events/core.c:4453
put_event+0x47/0x60 kernel/events/core.c:4547
perf_mmap_close+0x789/0xe40 kernel/events/core.c:5547
remove_vma+0xb2/0x180 mm/mmap.c:182
remove_vma_list mm/mmap.c:2554 [inline]
do_munmap+0x723/0xed0 mm/mmap.c:2790
mmap_region+0x224/0x1760 mm/mmap.c:1706
do_mmap+0x8e2/0x1080 mm/mmap.c:1536
do_mmap_pgoff include/linux/mm.h:2319 [inline]
vm_mmap_pgoff+0x1c5/0x230 mm/util.c:357
ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline]
__x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7
48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f138ecf6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000
RBP: 000000000075c070 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 00007f138ecf76d4
R13: 00000000004c5d7b R14: 00000000004da810 R15: 00000000ffffffff
writeback:0KB swap:0KB inactive_anon:0KB active_anon:242288KB
inactive_file:0KB active_file:4KB unevictable:0KB
Memory cgroup out of memory: Kill process 23560 (syz-executor.5) score 1110
or sacrifice child
Killed process 23560 (syz-executor.5) total-vm:72580kB, anon-rss:2196kB,
file-rss:34816kB, shmem-rss:0kB
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|
__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
syz-executor.3 cpuset=syz3 mems_allowed=0-1
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
CPU: 1 PID: 6987 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634
memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667
__alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193
alloc_pages include/linux/gfp.h:509 [inline]
pmd_alloc_one arch/x86/include/asm/pgalloc.h:102 [inline]
__pmd_alloc+0x41/0x460 mm/memory.c:4283
pmd_alloc+0x10c/0x180 include/linux/mm.h:1840
copy_pmd_range mm/memory.c:1133 [inline]
copy_pud_range mm/memory.c:1187 [inline]
copy_p4d_range mm/memory.c:1209 [inline]
copy_page_range+0x633/0x1f90 mm/memory.c:1271
dup_mmap kernel/fork.c:544 [inline]
dup_mm kernel/fork.c:1283 [inline]
copy_mm kernel/fork.c:1339 [inline]
copy_process.part.0+0x543d/0x7a30 kernel/fork.c:1892
copy_process kernel/fork.c:1689 [inline]
_do_fork+0x257/0xfd0 kernel/fork.c:2202
__do_sys_clone kernel/fork.c:2309 [inline]
__se_sys_clone kernel/fork.c:2303 [inline]
__x64_sys_clone+0xbf/0x150 kernel/fork.c:2303
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7
48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe4ffe60c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459879
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe4ffe616d4
R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 7004 Comm: syz-executor.5 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
fail_dump lib/fault-inject.c:51 [inline]
should_fail.cold+0xa/0x1b lib/fault-inject.c:149
__should_failslab+0x121/0x190 mm/failslab.c:32
should_failslab+0x9/0x14 mm/slab_common.c:1557
slab_pre_alloc_hook mm/slab.h:424 [inline]
slab_alloc mm/slab.c:3383 [inline]
__do_kmalloc mm/slab.c:3725 [inline]
__kmalloc+0x2e2/0x750 mm/slab.c:3736
kmalloc include/linux/slab.h:520 [inline]
sock_kmalloc net/core/sock.c:1981 [inline]
sock_kmalloc+0xc6/0x120 net/core/sock.c:1972
___sys_sendmsg+0x5bd/0x920 net/socket.c:2082
__sys_sendmsg+0x105/0x1d0 net/socket.c:2153
__do_sys_sendmsg net/socket.c:2162 [inline]
__se_sys_sendmsg net/socket.c:2160 [inline]
__x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7
48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe248f09c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe248f09c90 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe248f0a6d4
R13: 00000000004c77e9 R14: 00000000004dd048 R15: 0000000000000004
Task in /syz3 killed as a result of limit of /syz3
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
memory: usage 307200kB, limit 307200kB, failcnt 1059
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz3: cache:36KB rss:249924KB rss_huge:223232KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:249892KB inactive_file:0KB active_file:4KB
unevictable:0KB
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 0000000046869e6f conn xmit_atomic (null)
Memory cgroup out of memory: Kill process 5572 (syz-executor.3) score 1113
or sacrifice child
Killed process 5572 (syz-executor.3) total-vm:72712kB, anon-rss:2204kB,
file-rss:35792kB, shmem-rss:0kB
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|
__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 0 PID: 7045 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634
memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667
__alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413
alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193
alloc_pages include/linux/gfp.h:509 [inline]
pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35
__pte_alloc+0x2a/0x360 mm/memory.c:653
copy_pte_range mm/memory.c:1077 [inline]
copy_pmd_range mm/memory.c:1153 [inline]
copy_pud_range mm/memory.c:1187 [inline]
copy_p4d_range mm/memory.c:1209 [inline]
copy_page_range+0x151f/0x1f90 mm/memory.c:1271
dup_mmap kernel/fork.c:544 [inline]
dup_mm kernel/fork.c:1283 [inline]
copy_mm kernel/fork.c:1339 [inline]
copy_process.part.0+0x543d/0x7a30 kernel/fork.c:1892
copy_process kernel/fork.c:1689 [inline]
_do_fork+0x257/0xfd0 kernel/fork.c:2202
__do_sys_clone kernel/fork.c:2309 [inline]
__se_sys_clone kernel/fork.c:2303 [inline]
__x64_sys_clone+0xbf/0x150 kernel/fork.c:2303
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459879
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7
48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe4ffe60c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459879
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe4ffe616d4
R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff
Task in /syz3 killed as a result of limit of /syz3
memory: usage 307200kB, limit 307200kB, failcnt 1107
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
Memory cgroup stats for /syz3: cache:36KB rss:249884KB rss_huge:223232KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:249884KB inactive_file:0KB active_file:0KB
unevictable:0KB
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
Memory cgroup out of memory: Kill process 12632 (syz-executor.3) score 1113
or sacrifice child
Killed process 12632 (syz-executor.3) total-vm:72844kB, anon-rss:2208kB,
file-rss:35784kB, shmem-rss:0kB
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL),
nodemask=(null), order=0, oom_score_adj=1000
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
syz-executor.3 cpuset=syz3 mems_allowed=0-1
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
CPU: 0 PID: 7106 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972
mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987
wp_page_copy+0x430/0x16a0 mm/memory.c:2520
do_wp_page+0x57d/0x10b0 mm/memory.c:2799
handle_pte_fault mm/memory.c:4057 [inline]
__handle_mm_fault+0x2305/0x3f80 mm/memory.c:4165
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x40ea18
Code: 8b 34 c6 4a 8d 04 2e 48 3d ff ff ff 7e 0f 86 77 ff ff ff bf 95 ee 4b
00 31 c0 e8 13 33 ff ff 31 ff e8 5c 2f ff ff 0f 1f 40 00 <89> 3c b5 00 00
73 00 eb b6 31 ed 0f 1f 44 00 00 80 3d 4e 1a 66 00
RSP: 002b:00007ffd2e0545c0 EFLAGS: 00010246
RAX: 00000000f20d9cc9 RBX: 00000000379c6179 RCX: 0000001b31b20000
RDX: 0000000000000000 RSI: 0000000000001cc9 RDI: fffffffff20d9cc9
RBP: 0000000000000015 R08: 00000000f20d9cc9 R09: 00000000f20d9ccd
R10: 00007ffd2e054760 R11: 0000000000000246 R12: 000000000075bfa8
R13: 0000000080000000 R14: 00007fe501e62008 R15: 0000000000000028
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
Task in /syz3 killed as a result of limit of /syz3
memory: usage 307168kB, limit 307200kB, failcnt 1157
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz3: cache:36KB rss:249836KB rss_huge:223232KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:249896KB inactive_file:0KB active_file:0KB
unevictable:0KB
Memory cgroup out of memory: Kill process 31414 (syz-executor.3) score 1113
or sacrifice child
Killed process 31414 (syz-executor.3) total-vm:72580kB, anon-rss:2192kB,
file-rss:35800kB, shmem-rss:0kB
oom_reaper: reaped process 31414 (syz-executor.3), now anon-rss:0kB,
file-rss:34840kB, shmem-rss:0kB
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL),
nodemask=(null), order=0, oom_score_adj=1000
atomic_op 0000000082dbd6e8 conn xmit_atomic (null)
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 0 PID: 7162 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972
mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987
wp_page_copy+0x430/0x16a0 mm/memory.c:2520
do_wp_page+0x57d/0x10b0 mm/memory.c:2799
handle_pte_fault mm/memory.c:4057 [inline]
__handle_mm_fault+0x2305/0x3f80 mm/memory.c:4165
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x40c228
Code: 00 00 49 8d be 88 00 00 00 48 89 ea 48 89 de 0f 85 dd 00 00 00 e8 38
2c 00 00 8b 05 e2 bd 32 00 48 8b 15 73 42 66 00 83 c0 01 <89> 05 d2 bd 32
00 89 02 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f
RSP: 002b:00007ffd2e054620 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 0000001b30b20e00 RCX: 0000001b31b20000
RDX: 0000001b30b20000 RSI: 0000000000001e2f RDI: ffffffff13f8fe2f
RBP: 0000001b30b20e04 R08: 0000000013f8fe2f R09: 0000000013f8fe33
R10: 00007ffd2e054760 R11: 0000000000000246 R12: 0000001b30b20e08
R13: 00000000000e3bb6 R14: 000000000075bfc8 R15: 000000000075bfd4
Task in /syz3 killed as a result of limit of /syz3
memory: usage 307200kB, limit 307200kB, failcnt 1207
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz3: cache:36KB rss:249876KB rss_huge:223232KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:249940KB inactive_file:0KB active_file:0KB
unevictable:0KB
Memory cgroup out of memory: Kill process 15346 (syz-executor.3) score 1113
or sacrifice child
Killed process 15346 (syz-executor.3) total-vm:72712kB, anon-rss:2200kB,
file-rss:35788kB, shmem-rss:0kB
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|
__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 1 PID: 7187 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xc4e/0x1480 mm/memcontrol.c:2304
memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634
memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667
__alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413
alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193
alloc_pages include/linux/gfp.h:509 [inline]
pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35
do_fault_around mm/memory.c:3635 [inline]
do_read_fault mm/memory.c:3676 [inline]
do_fault mm/memory.c:3810 [inline]
handle_pte_fault mm/memory.c:4041 [inline]
__handle_mm_fault+0x3528/0x3f80 mm/memory.c:4165
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x459879
Code: Bad RIP value.
RSP: 002b:00007fe4ffe60c78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000459879
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe4ffe616d4
R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff
Task in /syz3 killed as a result of limit of /syz3
memory: usage 304728kB, limit 307200kB, failcnt 1207
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz3: cache:36KB rss:247792KB rss_huge:221184KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:247696KB inactive_file:0KB active_file:8KB
unevictable:0KB
Memory cgroup out of memory: Kill process 16634 (syz-executor.3) score 1113
or sacrifice child
Killed process 16634 (syz-executor.3) total-vm:72712kB, anon-rss:2200kB,
file-rss:35788kB, shmem-rss:0kB
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
atomic_op 000000009612f109 conn xmit_atomic (null)
kobject: 'loop1' (00000000946a99c0): kobject_uevent_env
kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
__ntfs_warning: 57 callbacks suppressed
ntfs: (device loop1): parse_options(): Option utf8 is no longer supported,
using option nls=utf8. Please use option nls=utf8 in the future and make
sure utf8 is compiled either as a module or into the kernel.
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
ntfs: (device loop1): parse_options(): Unrecognized mount option
appraise_type.
ntfs: (device loop1): parse_options(): Unrecognized mount option
euid>00000000000000000000.
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
atomic_op 00000000e097167a conn xmit_atomic (null)
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (00000000946a99c0): kobject_uevent_env
kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (00000000946a99c0): kobject_uevent_env
kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
atomic_op 000000001e8fc05f conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (00000000946a99c0): kobject_uevent_env
kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
atomic_op 00000000930c5968 conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
atomic_op 00000000ac833d89 conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
atomic_op 000000009319c13a conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
Unknown ioctl 35302
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
atomic_op 00000000846767aa conn xmit_atomic (null)
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
atomic_op 000000008ef349f2 conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL),
nodemask=(null), order=0, oom_score_adj=1000
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 1 PID: 7381 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972
mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987
do_huge_pmd_wp_page_fallback mm/huge_memory.c:1186 [inline]
do_huge_pmd_wp_page+0x97e/0x34a0 mm/huge_memory.c:1346
wp_huge_pmd mm/memory.c:3942 [inline]
__handle_mm_fault+0x167b/0x3f80 mm/memory.c:4155
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x440af9
Code: b7 0e 66 89 0f 48 83 c6 02 48 83 c7 02 0f 1f 40 00 f6 c2 04 74 0c 8b
0e 89 0f 48 83 c6 04 48 83 c7 04 f6 c2 08 74 0e 48 8b 0e <48> 89 0f 48 83
c6 08 48 83 c7 08 81 e2 f0 00 00 00 74 1f 0f 1f 40
RSP: 002b:00007ffd2e054688 EFLAGS: 00010202
RAX: 0000000020000140 RBX: 0000000000000000 RCX: 0030656c69662f2e
RDX: 0000000000000008 RSI: 0000000000760ad0 RDI: 0000000020000140
RBP: 0000000000760ab0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000004395d0 R11: 0000000000000012 R12: 00000000004c5e06
R13: 000000000000012c R14: 0000000000760ab8 R15: fffffffffffffffe
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
Task in /syz3 killed as a result of limit of /syz3
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
memory: usage 307200kB, limit 307200kB, failcnt 1239
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
Memory cgroup stats for /syz3: cache:36KB rss:248044KB rss_huge:221184KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:248148KB inactive_file:4KB active_file:4KB
unevictable:0KB
Memory cgroup out of memory: Kill process 19134 (syz-executor.3) score 1113
or sacrifice child
Killed process 19134 (syz-executor.3) total-vm:72580kB, anon-rss:2192kB,
file-rss:35796kB, shmem-rss:0kB
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
syz-executor.5 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|
__GFP_ZERO), nodemask=(null), order=3, oom_score_adj=1000
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
syz-executor.5 cpuset=syz5 mems_allowed=0-1
CPU: 0 PID: 7395 Comm: syz-executor.5 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634
memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667
__alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413
__alloc_pages include/linux/gfp.h:473 [inline]
__alloc_pages_node include/linux/gfp.h:486 [inline]
alloc_pages_node include/linux/gfp.h:500 [inline]
alloc_thread_stack_node kernel/fork.c:241 [inline]
dup_task_struct kernel/fork.c:806 [inline]
copy_process.part.0+0x3e0/0x7a30 kernel/fork.c:1732
copy_process kernel/fork.c:1689 [inline]
_do_fork+0x257/0xfd0 kernel/fork.c:2202
__do_sys_clone kernel/fork.c:2309 [inline]
__se_sys_clone kernel/fork.c:2303 [inline]
__x64_sys_clone+0xbf/0x150 kernel/fork.c:2303
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c249
Code: ff 48 85 f6 0f 84 27 8e fb ff 48 83 ee 10 48 89 4e 08 48 89 3e 48 89
d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 0f 8c
fe 8d fb ff 74 01 c3 31 ed 48 f7 c7 00 00 01 00 75
RSP: 002b:00007fffbb9bee18 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fe248f0a700 RCX: 000000000045c249
RDX: 00007fe248f0a9d0 RSI: 00007fe248f09db0 RDI: 00000000003d0f00
RBP: 00007fffbb9bf030 R08: 00007fe248f0a700 R09: 00007fe248f0a700
R10: 00007fe248f0a9d0 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fffbb9beecf R14: 00007fe248f0a9c0 R15: 000000000075bf2c
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
Task in /syz5 killed as a result of limit of /syz5
memory: usage 307200kB, limit 307200kB, failcnt 3375
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz5: cache:112KB rss:242852KB rss_huge:210944KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:242964KB inactive_file:0KB active_file:0KB
unevictable:0KB
Memory cgroup out of memory: Kill process 7301 (syz-executor.5) score 1113
or sacrifice child
Killed process 7301 (syz-executor.5) total-vm:72712kB, anon-rss:2204kB,
file-rss:35788kB, shmem-rss:0kB
syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL),
nodemask=(null), order=0, oom_score_adj=1000
syz-executor.3 cpuset=syz3 mems_allowed=0-1
CPU: 0 PID: 7439 Comm: syz-executor.3 Not tainted 4.19.69 #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
rds_sendmsg: 3 callbacks suppressed
atomic_op 0000000009777ed4 conn xmit_atomic (null)
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
dump_header+0x15e/0xa55 mm/oom_kill.c:441
kobject: 'loop4' (000000009228f136): kobject_uevent_env
oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
out_of_memory mm/oom_kill.c:1129 [inline]
out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062
mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416
mem_cgroup_oom mm/memcontrol.c:1742 [inline]
try_charge+0xef7/0x1480 mm/memcontrol.c:2304
mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972
mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987
do_huge_pmd_wp_page_fallback mm/huge_memory.c:1186 [inline]
do_huge_pmd_wp_page+0x97e/0x34a0 mm/huge_memory.c:1346
wp_huge_pmd mm/memory.c:3942 [inline]
__handle_mm_fault+0x167b/0x3f80 mm/memory.c:4155
handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
__do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x440af9
Code: b7 0e 66 89 0f 48 83 c6 02 48 83 c7 02 0f 1f 40 00 f6 c2 04 74 0c 8b
0e 89 0f 48 83 c6 04 48 83 c7 04 f6 c2 08 74 0e 48 8b 0e <48> 89 0f 48 83
c6 08 48 83 c7 08 81 e2 f0 00 00 00 74 1f 0f 1f 40
RSP: 002b:00007ffd2e054688 EFLAGS: 00010202
RAX: 0000000020000140 RBX: 0000000000000000 RCX: 0030656c69662f2e
RDX: 0000000000000008 RSI: 0000000000760ad0 RDI: 0000000020000140
RBP: 0000000000760ab0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000004395d0 R11: 0000000000000012 R12: 00000000004c5e06
R13: 000000000000012c R14: 0000000000760ab8 R15: fffffffffffffffe
Task in /syz3 killed as a result of limit of /syz3
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
memory: usage 307200kB, limit 307200kB, failcnt 1282
memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
atomic_op 00000000719819b1 conn xmit_atomic (null)
Memory cgroup stats for /syz3: cache:36KB rss:248000KB rss_huge:221184KB
shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB
inactive_anon:0KB active_anon:248140KB inactive_file:0KB active_file:4KB
unevictable:0KB
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
Memory cgroup out of memory: Kill process 19967 (syz-executor.3) score 1113
or sacrifice child
Killed process 19967 (syz-executor.3) total-vm:72580kB, anon-rss:2192kB,
file-rss:35796kB, shmem-rss:0kB
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 00000000e1f67faa conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 0000000030601010 conn xmit_atomic (null)
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
atomic_op 000000001b382428 conn xmit_atomic (null)
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
atomic_op 0000000095026511 conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 00000000f055bf0e conn xmit_atomic (null)
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
atomic_op 000000000ede4210 conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (000000009228f136): kobject_uevent_env
kobject: 'loop4' (000000009228f136): fill_kobj_path: path
= '/devices/virtual/block/loop4'
atomic_op 00000000157b08cc conn xmit_atomic (null)
kobject: 'loop3' (00000000064a2131): kobject_uevent_env
kobject: 'loop3' (00000000064a2131): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (0000000085d872b6): kobject_uevent_env
kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
atomic_op 00000000b9c604e7 conn xmit_atomic (null)
kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env
kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path
= '/devices/virtual/block/loop2'
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Dec 29, 2019, 11:27:06 PM12/29/19
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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